Method and apparatus fob recoiling



Feb. 27, 1940.- A. J. R. GRI-:ER 2,191,463

i Y METHODl AND APPARATUS FOR RECOILING METAL COILS Filed Maron 1o, 1939 s sheets-sheet 5 Patented Feb. 27, 1940 UNITED STATES METHOD AND APPARATUS FOR RECOILING METAL COILS Agnes J. Reeves Greer, Morgantown, W. Va.

Application March 10, 1939, Serial No. 261,038

9 Claims.

The invention relates to a method of and apparatus for forming-coils of metal preparatory to pickling the coils in a pickling machine of the general type disclosed in my prior Patent No.

5 2,091,921, issued August 31, 1937, Shoemaker Patent No. 2,120,843, issued June 14, 1938, and my co-pending application Serial No. 249,484, filed January 5, 1939; and this application is an improvement upon my co-pending application for o Recoiler for metal coils, Serial No. 230,304, filed September 16, 1938.

The general type of pickling machines above referred to provide means for supporting the metal coils upon mandrelsr which are rotated as w they are progressed through the pickling and washing tanks, whereby the coils are rotated upon the mandrels as they are carried through the pickling and washing solutions.

It is necessary that the convolutions of the coil i be opened up, or separated, before entering the pickling machine, so that none of the convolutions will remain in contact with each other while in the pickling solution, as otherwise the pickled metal will be marred by black spots 'or marks u where theacid has not had access to the surface of the metal. f

f To this end the Shoemaker patent contemplated the use of a back spinner located between the recoiler and the pickling tank for opening up or 30 separating the convolutions of each coil before it is charged into the pickling tank.

My co-pending application Serial No. 230,304 dispensed with this back spinner and provided for back spinning the coil upon the recoiler, so

35 as to open up the convolutions of the coll'prior to the pickling operation.

In my co-pending application Serial N o. 249,- 484, means are provided for further back spinping of the coils as they are passed through the 0, solution, by rotating the mandrels, on which the coils are supported, in, a reverse direction during at least a part of the time.

In all of the above cases the coil was formed in a conventional spiral, comprising a continuous curve from the center to the outside of the coil. This frequently resulted in two convolutionsof the coil contacting with veachsother forsome distance while the coil waslin the pickling solution, thus, preventing the acid from properly Contacting the opposed surfaces of these convolutions of the coil and resulting in an improperly pickled coil having, black spots upon the surfaces thus not properly exposed to the action of the acid.

,The present application contemplates the formation of a. coil which will prevent any ci the coil in which the angular bends are irregularly of the coil;

convolutions of the coil from remaining in contact with each other during the time the coil is passing through the pickling solution.

The. object of the invention is to provide a novel method for forming a metal coil vof such shape that none of the convolutions of the coil will remain in contact with each other. l

Another object is to provide means for forming a metal coll of such shape that the convolutions of the coil will not contact with each other.

A further object is to provide for the formation oi a metal coil in which each convolution of the coil has a plurality of angular bends therein.

A still further object is the provision of such a .M

spaced around each convolution of the coil.

Another object is the provision of means for forming such a, coil and then back spinning the coil to separate or open up the convolutions so that the angular bends of adjacent convolutions will not register with each other.

A still further object of the invention is the provision of a drum upon which the coils are iformed, said drum having longitudinally disposed ribs around its exterior for forming angular bends in the convolutions of the metal coil as it is coiled upon the drum.

The above objects together with others which will be apparent from the drawings and following description or which may be laterjreferred to may be attained by constructing thefirecoiler mechanism and forming the improvedtal coil; in the manner illustrated in the ac, hying drawings in which y Y Figure 1 is an elevation lof a recoiler`drum 35 showing a metal coil wound thereon; n l,

Fig. 2, a view similar to Figure 1 showing the metal coil after it has been back spun on-the 'drum to separate or open up the convolutions Fig. 3, an elevation of a coil formed\in accord` anceV with the invention suspended on amandrel 'for passing' through a pickling machine; and

Fig. 4, a plan view of a recoiler drum for forming the improved coil. i 45 Similar numerals refer to similarl parts throughout the several views.A

The ht rolled coil to be recoiled for pickllng in accordance with the present invention, is uncoiled and maybe fed to the improved recoiler by means of a. feeding mechanism including feed rolls, edge rolls, pinch rolls, brake mechanism, leveling rolls, and the like, asillustrated anddescribed in detail in my copending applicationl Serial No. 230.304, a portion of this mechangular bends formed in the convolutions of thev coil do noi-l in any way interfere with the proper cold rolling of the pickled metal.

According to the provisions of the patent statutes I have explained the principle of my invention and-described one embodiment thereof, but

I desire to have it understood that within the scope of the appended claims the invention may be practiced otherwise than as specifically illustrated and described.

I claim:

1. The method of forming a coil of 'metal which consists in Winding the metal spirally upon itself in one direction to form a coil each convolution of which has a plurality of spaced angular bends therein and then separating the convolutions of the coil so that the angular bends of adjacent convolutions will be spaced from each other.

2. The method of forming a coil of metal which consists in Winding the metal spirallyv upon itself in one direction to form a coil each convolution of which has a plurality of irregularly spaced angular bends therein and then separating the convolutions of the coil so that the angular bends of adjacent convolutions will be spaced from each other.

3. The method of forming a coil of metal which consists in Winding the metal spirally upon itself in one direction to form a coil each convolution of which has a plurality of spaced angular bends therein and then holding the outer end 'of the coil against movement and positively rotating the inner end of the coil in the opposite direction to separate the convolutions of the coil.

4. 'Ihe method of forming a coil of metal which consists in winding the metal spirally upon'its'elf in one direction to form a coil each convolution of which has a plurality of irregularly spaced angular bends therein and then holding the outer end of the coil against movement and positively rotating the inner end of the coil in the opposite direction to separate the convolutions of the coil.

5. A recoiler for recoiling a coil of metal and separating the convolutions of the coil comprising a drum, spaced ribs upon the exterior of the drum, means upon the drum for connecting one end of a metal coil, means for rotating the drum in one direction for coiling the metal thereon to form a coil the convolutions of which have spaced, angular bends therein, a stop adjacent to y the drum for engaging and holding the outer end of the coil against movement, and means for rotating the drum in the opposite direction to separate the convolutions of the coil so that the angular bends of adjacent convolutions will be spaced from each other.

6. A recoiler for recoiling a coil of metal and separating the convolutions of the coil comprising a drum, irregularly spaced ribs upon the exterlor of the drum, means upon the drum for connecting one end of a metal coll, means for rotating the drum in one direction for coiling the metal thereon to form a coil the convolutions of which have spaced, angular bends therein, a stop adjacent to the drum for'engaging and holding the outer end of the coil against movement, and means for rotating the drum in the opposite 'direction to separate the convolutions of the coil sc that the angular bends of adjacent convolutions will be spaced from each other.

7. A recoiler for recoiling a coil of metal and separating the convolutions of the coil comprising a drum, spaced, longitudinally disposed ribs upon the exterior of the drum, means upon the drum for connecting one end of a metal coil, means for rotating the drum in one direction for coiling the metal thereon to form a coil the convolutions of which have'spaced, angular bends therein, a stop adjacent to the drum for engaging and holding the outer end` of the coil against movement, and means for rotating the drum in the opposite direction to separate the convolutions of the coil so that the angular bends of adjacent convolutions will be spaced from each other.

8. A recoiler for recalling a coil of metal and separating the convolutions of the coil comprising a drum, irregularly spaced, longitudinally disposed ribs upon the exterior of the drum, means upon the drum for connecting one end of a metal coil, means for rotating the drum in one direction for coiling the metal thereon to form a. coil the convolutions of which have spaced, angular bends therein, a stop adjacent to the drinn for engaging and holding the outer end of the c'oil against movement, and means for rotating the drum in the opposite direction to'separate the convolutions of the coil so that the angular bends of adjacent convolutions will be spaced from each other.

9. The method of forming a coil of metal which consists in winding the metal spirally upon itself in one direction to form a coil, the metal being so wound that bends are formed therein, and then partially unwinding the coil to separate the convolutions thereof so that the bends in adjacent convolutions will bespaced from each other.

AGNES J. REEVES GREER.

Petented Feb. 27, 1940 2,191,464

.UNITED STATES PATENT I OFFICE Pnocess Fon AoTUA'rmG oA'rALY'rIc summons Marion H. Gwynn, Leonia, N. J.

No Drawing. Apiieation December 24, 193s, Serial No. 117,515

9 Claims. (Cl. 23-233) 'I'his invention relates to catalysts and to the I nd the alkaline earth hydroxides useful to preparation and reactivation of active catalytic produce alkaline solutions of the hypohalite comsurfaces or surface layers, particularly those pounds, as the sulphur is removed by forming inwhich comprise a secondarily ferromagneticmetysoluble sulfate precipitates.

:i al and which are adherent or xed to the under- According to my invention instead of using ,a lying metal. These treated surfaces or surface hypobromite solution I can use other hypohalites layers may be used in hydroflning, i. e., hydroin alkaline solution, particularly the more stable genating and/or refining oils and other carbonay forms of hypohalites to produce catalysts, and ceous compounds, particularly in sulphur sensithese catalysts are usable as such without re- 10 tive hydroning. These surface layers, especially quiring further chemical treatment before use. 10 in conjunction with a promoter for dehydration, It is known that hypohalite compounds decomare extraordinarily catalytic for the conversion pose readily but that they have diiferent degrees of water gas to light hydrocarbons and like comof stability. 'I'he more labile forms are useful pounds. The treated surface layers may also be in initiating oxidation of the catalyst surface, but

used as reagents, as for example in the formaonce the oxidation is begun the more stable forms 15 tion of metallic sulphides or carbonyls, or as adof hypohalite compounds oxidize the surface sorption or purifying agents, as in the treatment more uniformly and eiliciently, and yield the of vegetable or animal glycerides before steam more adherent surfaces. Of the several hypodeodorization, or as when doctor sweetening light more adherent surfaces. Of the several hypopetroleum or like distillates; or as tower packing bromites are generally the most stable. Mixing 20 or otherwise. hypohalites of different halogens renders the The use of hypochlorite solutions on metals, hypohalites less stable. Dissolved catalytic mettogether with 'a subsequent reduction in hydroals also render hypohalite solutions less stable. gen, has been proposed to produce catalysts which Decreases of temperature and of concentration are then used in the hydrogenation of oils. Howof hypohalites are stabilizing factors. Free hy- 25 ever, on metals like cobalt the proposed method pohalous acids are less stable than other charfails entirely to produce a catalyst, and on nickel acteristlc hypohalite forms and should be avoided fails to prepare highly active and adherent cataparticularly in the liquid phase since they exert lytic surfaces, and fails to prepare any catalyst a detrimental solvent action onthe surface layer.

which maintains its activity substantially uni- Alkali added to aqueous hypohalite salt solutions 30 form during hydroning. inhibits the hydrolysis of the salt to free hypo- The preferrediform of my invention relates to halous acid. Hence a large excess of alkali or the preparation of highly active hydrated and hydroxyl ion of at least one molar concentration black fixed catalytic surfaces or surface layers by per molar concentration of hypohalite salt is a preliminarily treatinga metal such as cobalt or stabilizing factor, exerting a substantial repres- 35 nickel in a fora-minata state to form an adherent sive effect on the hydrolysis of the hypohalite surface layer which is moderately catalytic with salt. A highly alkaline hypohalite solution may or without gentle roasting, being also preferably increase in Stability during activation 0f the mehydrated. The surface comprising the treated tallic surfaces because the molar concentration 4.o surface layer is then oxidized until highly cataof hypohalite is decreasing by use. while the lytic with an aqueous hypobromite solution conmolar concentration of alkali remains relatively taining a high and suillcient concentration of constant. For instance in Example 1 (to be set alkali to repress the formation of free hypoforth later on in the description) the molar conbromous acid, but insufficient to exert a solvent cent1-ation of sodium hydroxide relative to the action on the surface layer. The catalyst promolecular concentration of sodium hypobromite 45 duced in this way without further chemical treatexceeds unity in the fresh solution, but the relament is ready for use in hydroflning operations tive concentration of sodium hydroxide increases and maintains its activity substantially uniform during immersion of the cobalt surfaces. With during hydroning until spent. Instead of startproper treatment of the metal surface, I may use ing with a new metal surface or with -a surface the relatively Stable OImS 0f hyphaltes- 50 comprisinga readily oxdizable compound of the The hypohalite solutions are used in an alkacatalytic metal I may start with surfaces which line solution with the alkalinity so chosen as to have been used in hydrogenation and which must. eliminate essentially all solvent action of the be reactivated. When my invention is used to hypohalite solutions on the vsurface layer. For

reactivate catalyst surfaces containing sulphur, the Optimum alkalinity in my hypohalite S0111- 

